I tend to agree with jsauce, but on the other hand, there has been so many hard drive companies that buy other companies out, I can hardly remember who makes what these days.
As for SCSI, just watch out for heat issues. Especially if you build your own systems. We bought clone towers for servers and spec'd all the parts. We were losing hard drives left and right. When we put a temperature probe on them (HP SCSI drives if I remember right) and they were running way above temp spec.
Turns out the case manufacturer had the fan on the powersupply blowing into the case. They added a cooling fan in the front of the tower below the drive bay. This fan blew out of the case. You would think the combination would give you a good airflow through the case. Actually it did flow over the motherboard nicely, but there was no airflow over the drie bays. Reversing the front fan so that blow fans blew into teh case caused greater airflow over the drive bay and out the intended cooling vents.
(Just an old story from a guy who got his start with the original IBMPC, DOS 2.1, and MFM drives.)